Apparatus for the treatment of yeast.



PATENT-3D APR. 21 1903.

"0. HAGE MULLER. v APPARATUS FOR THE TREATMENT OF YEAST.

APPLICATION FILED 0053.13, 1902;

I0 MODEL.

n: Nmus PETERS co, P HOTO-UTHO., wAsumamx, o c

UNITED STATES PATENT OFFICE.

CHRISTIAN HAGENMI'ILLER, 0F ERFURT, GERMANY.-

APPARATUS FOR THE TREATMENT OF YEAST.

SPECIFICATION forming part of Letters Patent No. 726,052, dated April 21, 1903. Application filed October 13, 1992. Serial No. 127,086. (No model.)

yeast with compressed air in a funnel-shaped receptacle capable of being tilted. For this" purpose an injector is detachably arranged in the funnel-shaped receptacle and is connected with an air-pressure supply, whereby each cell of the yeast is subjected to such a motion as to be repeatedly brought in contact with the air, which thus completely saturates the yeast with air andincreases its fermentative powers.

My improved apparatus is shown in the ac-,

companying drawings, in which Figure 1 is a side elevation of the apparatus, partly in section; and Fig. 2, a top plan view of the same.

The funnel-shaped receptacle b is rotatably suspended from a support a and at its lower portion provided with a tap c. This tap can, through a hose y or tube or the like, be connected with an air-pressure conduit. At the bottom of the receptacle b is arranged an injector 0c in an easily-detachable manner.

The operation is as'follows: After the yeast to be developed oraerated is introduced with an addition of beerwort into the receptacle b, filling about one-third of its capacity, the tap c is opened. The air entering the receptacle whirls the yeast and comes-into direct contact with each single particle thereof, this being due to the influence of the injector or, which sucks up through lateral passages z the yeast cells or particles which settle at the bottom of the receptacleb and whirls them up again. They are thuscontinually subjected to the air-current until the tap c-cis closed. The discharge ofthe aerated yeast-is effected by tilting the receptacle 1), preferably by means of a worm-gear h i is, adapted to be operated by a crank-handle. This gear could, of course, be substituted by any suitable equivalent mechanism.

If the injector w by being simply lifted be removedfrom the receptacle 6 and the hose ybe attached to a water-pressure supply, the apparatus can without difficulty at once he made use of as a washing device for the yeast. In this case the receptacle 1) is provided beneath its upper edge 01 with a circular trough f and a discharge-conduit g. The operation is then as follows: The drained yeast to be Washed is poured into the receptacle when in its vertical position, and the tap c is opened. The water under pressure produces in the receptacle a strong whirl which upon the level of the water rising drives the lighter particles of the yeast to the top, while the heavier and sound particles of the yeast sink to the bottom. The admission of water is continued until the impurities and the feeble particles of the yeast are carried away over the edge 01 of the receptacle 1) through the trough f and the tube 9. The sound and specifically heavier particles of the yeast are not carried away with thewashed water, but sink and settle down near the walls of the funnel, where the jet of water coming from below is inefiective. After the yeast is sufficiently "washed in this man'ner the tap a is closed, and -the funnel h is tilted by means of the wormgear h 2' k in order to discharge its contents.

Having now particularly described and ascertained the nature of my said invention and in what manner the same is to be performed, I declare that what I claim is- 1. In an apparatus for the treatment of yeast, a funnel-shaped. receptacle having an inlet at the lowerjend thereof; means for controlling said inlet; a trough surrounding the upper portion of saidlreceptaele; an outlet from said trough; and means for discharging the contents of said receptacle.

2. In an apparatus for the treatment of yeast, a pivoted funnel-shaped receptacle having an inlet at its lower end, a tappet controlling said inlet, a trough surrounding the upper portion of said receptacle,and--m eans for tilting said receptacle to discharge the contents thereof. p

In testimony whereof'I have hereunto set my hand in presence,of.twofsubscribing-iwitnesses.

CHRISTIAN HAGENMULLER.

Witnesses PAUL TEICHMANN, O'rro HORNBOGEN. 

